Multi-medium sewage treatment filter with operating condition adjusting function

Abstract

The application discloses a multi-medium sewage treatment filter with operation condition adjusting function and relates to the technical field of sewage filters.The application comprises a filter tank, the upper end outer surface of the filter tank is fixedly connected with a top maintenance opening, the outer surface of the filter tank near the middle part and the bottom end is provided with a middle maintenance opening, and the outer surface of the filter tank near the top end is provided with a liquid inlet assembly.The application can automatically adjust the distance between filter plate one and filter plate two according to the different operation conditions of the filter tank, can expand the medium storage space by increasing the distance between filter plate one and filter plate two when backwashing the filter tank, can provide a certain moving space for the medium and impurities, can make the medium move in a small range and collide with adjacent medium, and can make the medium and impurities fully rub during the washing process, so that the separation of the impurities on the surface of the medium can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to sewage filter technical field, especially to the multi-medium sewage treatment filter with operating condition adjusting function. BACKGROUND

[0002] The multi-medium filter is an important part of the water treatment system, and there are various impurities and pollutants in the underground water. Regardless of the installation of any water purification equipment, the multi-medium filter needs to be used as the pretreatment equipment of raw water, so as to ensure that the water quality of the water purification treatment equipment is qualified.

[0003] In the process of treating sewage by using the multi-medium filter, a plurality of media are usually arranged in layers, and the impurities in the sewage are removed and adsorbed by using the media. In addition, in order to ensure the filtering effect of the media, the media are periodically backwashed to separate the impurities on the surface of the media from the media. The storage space of the media of the traditional multi-medium filter is usually not adjustable. Although this kind of arrangement improves the filtering effect, it cannot provide sufficient friction space for the media and the impurities during backwashing, which increases the difficulty of separating the impurities on the surface of the media.

[0004] In addition, the traditional multi-medium filter usually only filters the sewage by using the media, and cannot preliminarily screen out the large-particle impurities in the sewage. Therefore, the inlet pipe is easily blocked during a long time of flow guiding, and the large-particle impurities attached to the surface of the filter plate also block the filter holes, which affects the flow rate of the sewage and thus affects the filtering effect. SUMMARY

[0005] The purpose of the present application is to provide a multi-medium sewage treatment filter with operating condition adjusting function to solve the technical defects proposed in the background art.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: the multi-medium sewage treatment filter with operating condition adjusting function comprises a filter tank, the upper end outer surface of the filter tank is fixedly connected with a top maintenance opening, the outer surface of the filter tank near the middle and the bottom end is provided with a middle maintenance opening, the outer surface of the filter tank near the top is provided with a liquid inlet assembly, and the liquid inlet assembly penetrates into the inside of the filter tank.

[0007] The lower end outer surface of the filter tank is fixedly connected with a water outlet pipe and a backwashing water inlet pipe controlled by a control valve, and three groups of filter pieces for storing media are arranged at equal distances in the inside of the filter tank. The adjusting mechanism for adjusting the volume of the filter pieces is arranged between the three groups of filter pieces and the filter tank.

[0008] The filter piece includes filter plate one fixedly connected with the filter tank and filter plate two movably connected with the filter tank, and the filter plate one is located above the corresponding filter plate two, and a guide assembly for limiting movement of the filter plate two is arranged between the filter plate one and the filter plate two.

[0009] Further, the liquid inlet assembly includes a liquid inlet pipe for introducing sewage into the filter tank, and one end of the liquid inlet pipe is fixedly connected with a flow guide pipe, one end of the flow guide pipe penetrates into the inside of the filter tank and is fixedly connected with the filter tank, the end of the flow guide pipe away from the liquid inlet pipe is closed, and a plurality of groups of spray heads are fixedly connected at equal distances on the outer surface of the flow guide pipe.

[0010] Further, the flow guide pipe and the liquid inlet pipe form a 135-degree angle, and the end of the flow guide pipe away from the liquid inlet pipe is located above the side of the liquid inlet pipe, a connecting pipe is fixedly connected at the connection between the bottom end of the outer surface of the liquid inlet pipe and the flow guide pipe, and the connecting pipe communicates with the liquid inlet pipe, a movable cylinder is detachably and sealingly connected to the outer surface of the liquid inlet pipe, a motor is arranged on the bottom end of the outer surface of the movable cylinder, the output end of the motor penetrates into the inside of the movable cylinder and is fixedly connected with a rotating column, a plurality of groups of fixed columns are fixedly connected to the outer surface of the rotating column, and brush hairs are fixedly connected to the outer surface of the fixed columns.

[0011] Further, the adjusting mechanism includes a fixed cylinder fixedly connected to the top end of the inner surface of the filter tank, an electric push rod is arranged in the inside of the fixed cylinder, one end of the electric push rod is fixedly connected with the fixed cylinder, and the other end is fixedly connected with a limiting block, an active rod is fixedly connected to the lower end of the outer surface of the limiting block, and the active rod is threadedly connected with the fixed cylinder, the bottom end of the active rod penetrates through three groups of filter plate one and three groups of filter plate two in sequence, the active rod is movably connected with the filter plate one, and the active rod is rotatably connected with the filter plate two.

[0012] Further, a connecting plate is fixedly connected to the position between the filter plate one and the filter plate two on the outer surface of the active rod, active grooves are formed on the outer surfaces of the upper and lower ends of the connecting plate close to the two sides, springs and guide columns are arranged in the active grooves, one end of the spring is fixedly connected with the active groove, the other end is fixedly connected with the guide column, the guide column is movably connected with the active groove, and scraper plates are arranged on the upper and lower sides of the connecting plate, and one end of the guide column penetrates to the outside of the active groove and is fixedly connected with the scraper plate.

[0013] Further, the guide assembly comprises a limiting plate one fixedly connected with the filter plate two, each group of the filter plate two corresponds to two groups of the limiting plate one, the two groups of the limiting plate one are symmetrically distributed with the center axis of the filter plate two as the axis of symmetry, the lower end outer surface of the filter plate one is fixedly connected with the limiting plate two at the corresponding position of the filter plate two, and the upper end outer surface of the limiting plate one is provided with a movable hole, one end of the limiting plate two penetrates through the movable hole and is movably connected with the movable hole, and the outer surface of one side of the limiting plate two is inclined to the top end outer surface of the end of the limiting plate one.

[0014] Further, the filter tank inner surface side is provided with a wastewater hole above each group of the filter plate one, and the outer side of the filter tank is provided with a wastewater pipe at the position corresponding to the wastewater hole, the wastewater pipe is fixedly connected with the wastewater hole and communicates with the wastewater hole, and the lower end outer surface of the filter tank is provided with a drain pipe for draining wastewater.

[0015] As described above, due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0016] 1、In the present application, by setting the adjusting mechanism, the distance between the filter plate one and the filter plate two can be automatically adjusted according to the different running conditions of the filter tank. When backwashing the filter tank, the distance between the filter plate one and the filter plate two is increased, which can expand the storage space of the medium and provide a certain moving space for the medium and impurities. The medium can move in a small range and collide with adjacent medium, so that the medium and impurities can be fully rubbed during washing, avoiding the separation of impurities on the surface of the medium.

[0017] In addition, the movable rod can also drive the scraper to clean the impurities with strong adhesion force on the surface of the filter plate one and the filter plate two during adjusting the distance between the filter plate one and the filter plate two, further enhancing the backwashing effect.

[0018] 2、In the present application, by setting the inclination angle between the liquid inlet pipe and the flow guide pipe, and utilizing the vortex effect at the connection between the liquid inlet pipe and the flow guide pipe, solid impurities with large mass and particle size are collected in the inner part of the movable cylinder for collection, and the brush is adhered to the solid impurities, so as to preliminarily filter the sewage, avoid the blockage of the solid impurities in the inner part of the liquid inlet pipe and the flow guide pipe during long-term filtration, and ensure the smoothness of the sewage flow. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a combined view of the filter element and the guide assembly of the present application;

[0021] Figure 3 It is a combined view of the scraper and the connecting plate of the present application;

[0022] Figure 4 It is a perspective view of the scraper and the movable rod of the application;

[0023] Figure 5 It is a structural view of the guide assembly of the application;

[0024] Figure 6 It is a combined view of the liquid inlet pipe and the flow guide pipe of the application;

[0025] Figure 7 It is a structural view of the liquid inlet assembly of the application.

[0026] Reference signs: 1, filter tank; 2, top maintenance opening; 3, middle maintenance opening; 4, liquid inlet assembly; 401, liquid inlet pipe; 402, flow guide pipe; 403, spray head; 404, connecting pipe; 405, movable cylinder; 406, motor; 407, rotating column; 408, fixed column; 409, brush; 5, water outlet pipe; 6, backflush water inlet pipe; 7, filter element; 701, filter plate one; 702, filter plate two; 8, adjusting mechanism; 801, fixed cylinder; 802, electric push rod; 803, limiting block; 804, movable rod; 9, guide assembly; 901, limiting plate one; 902, limiting plate two; 903, movable hole; 10, connecting plate; 11, scraper; 12, movable groove; 13, spring; 14, guide column; 15, wastewater hole; 16, wastewater pipe. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0028] Embodiment one: as shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 The multi-medium sewage treatment filter with operation condition adjusting function provided by the application comprises a filter tank 1, a top maintenance opening 2 is fixedly connected to the upper end outer surface of the filter tank 1, middle maintenance openings 3 are arranged on the outer surface of the filter tank 1 near the middle and the bottom end, a liquid inlet assembly 4 is arranged on the outer surface of the filter tank 1 near the top end, and the liquid inlet assembly 4 penetrates into the inside of the filter tank 1.

[0029] The inside of the filter tank 1 is provided with three groups of filter pieces 7 for storing medium, the inside of the upper and lower two groups of filter pieces 7 is provided with quartz sand, and the inside of the middle filter piece 7 is provided with manganese sand material; the three groups of filter pieces 7 are provided with an adjusting mechanism 8 for adjusting the volume of the filter piece 7 between the filter tank 1;

[0030] The filter piece 7 comprises a filter plate one 701 fixedly connected with the filter tank 1 and a filter plate two 702 movably connected with the filter tank 1, and the filter plate one 701 is located above the corresponding filter plate two 702; the lower end of the filter tank 1 is fixedly connected with a water outlet pipe 5 controlled by a control valve.

[0031] The liquid inlet assembly 4 comprises a liquid inlet pipe 401 for guiding sewage into the inside of the filter tank 1; during filtration, the sewage is guided into the inside of the filter tank 1 through the liquid inlet pipe 401, and one end of the liquid inlet pipe 401 is fixedly connected with a flow guide pipe 402; one end of the flow guide pipe 402 penetrates into the inside of the filter tank 1 and is fixedly connected with the filter tank 1; the end of the flow guide pipe 402 away from the liquid inlet pipe 401 is closed, and a plurality of groups of spray heads 403 are fixedly connected with the outer surface of the flow guide pipe 402 at equal distances.

[0032] A connecting pipe 404 is fixedly connected with the connection between the bottom end of the outer surface of the liquid inlet pipe 401 and the flow guide pipe 402, and the connecting pipe 404 communicates with the liquid inlet pipe 401; the outer surface of the liquid inlet pipe 401 is detachably and sealingly connected with a movable cylinder 405, and the bottom end of the outer surface of the movable cylinder 405 is provided with a motor 406; the output end of the motor 406 penetrates into the inside of the movable cylinder 405 and is fixedly connected with a rotating column 407.

[0033] The motor 406 drives the rotating column 407 to rotate, and a vortex effect is formed at the central position in the inside of the movable cylinder 405 during the rotation of the rotating column 407; therefore, during the flow of the sewage through the movable cylinder 405 and to the flow guide pipe 402, the solid impurities in the sewage gather to the central position in the inside of the movable cylinder 405 under the action of the vortex effect; the outer surface of the rotating column 407 is fixedly connected with a plurality of groups of fixed columns 408, the outer surface of the fixed column 408 is fixedly connected with a bristle 409, and part of the solid impurities are wound on the surface of the bristle 409, so as to facilitate the collection of the solid impurities, and the movable cylinder 405 can be regularly disassembled for cleaning;

[0034] The flow guide pipe 402 and the liquid inlet pipe 401 form an included angle of 135 degrees, and the end of the flow guide pipe 402 away from the liquid inlet pipe 401 is located above the side of the liquid inlet pipe 401, so as to prolong the time length of the solid impurities in the sewage staying in the area corresponding to the movable cylinder 405, avoid the solid impurities from gathering in the inside of the liquid inlet pipe 401 and the flow guide pipe 402 to cause blockage during the long-term filtration, and meanwhile, the inclined arrangement of the flow guide pipe 402 can make the sewage uniformly sprayed in the inside of the filter tank 1.

[0035] Embodiment two: as shown in Figure 1 and Figure 2 The difference between this embodiment and embodiment 1 is that the lower end of the filter tank 1 is fixedly connected with a backflushing water inlet pipe 6 controlled by a control valve, and a waste water hole 15 is arranged on the inner surface of the filter tank 1 at a position above each group of filter plates 701. The control valve corresponding to the water outlet pipe 5 is closed, pure water is introduced into the inside of the filter tank 1 through the backflushing water inlet pipe 6, the pure water sprays the three groups of media through the backflushing water inlet pipe 6, and the three groups of media are backflushed;

[0036] The outer side of the filter tank 1 is provided with a waste water pipe 16 at a position corresponding to the waste water hole 15, the waste water pipe 16 is fixedly connected with and communicates with the waste water hole 15. Under the flushing of the pure water, the media and impurities rub against each other, which helps the impurities on the surface of the media to fall off quickly. When the liquid level of the flushed pure water corresponds to the waste water hole 15 below, the waste water hole 15 below is opened, part of the impurities enters the inside of the waste water pipe 16 through the waste water hole 15 below and is discharged, 30s later, the waste water hole 15 below is closed, and the waste water hole 15 in the middle is opened.

[0037] When the liquid level of the flushed pure water corresponds to the waste water hole 15 in the middle, part of the impurities is discharged through the waste water hole 15 in the middle. According to the above steps, the impurities are finally discharged into the inside of the waste water pipe 16 through the waste water hole 15 above.

[0038] Finally, the control valve corresponding to the waste water hole 15 is closed, the water outlet pipe at the lower end is opened, so that the flushed pure water is completely discharged, and then the distance between the filter plate one 701 and the filter plate two 702 is reduced, and the next round of sewage filtration is performed.

[0039] Embodiment three: as shown in Figure 2 The difference between this embodiment and embodiments 1 and 2 is that the sewage treated by the filter is discharged and collected through the water outlet pipe 5. After a period of treatment, the inside of the filter tank needs to be backflushed. At this time, the distance between the filter plate one 701 and the filter plate two 702 is adjusted by using the adjusting mechanism 8. The adjusting mechanism 8 comprises a fixed cylinder 801 fixedly connected to the inner surface of the top end of the filter tank 1, and an electric push rod 802 arranged in the inside of the fixed cylinder 801. One end of the electric push rod 802 is fixedly connected with the fixed cylinder 801, and the other end is fixedly connected with a limiting block 803. The outer surface of the lower end of the limiting block 803 is fixedly connected with a movable rod 804, and the movable rod 804 is screwedly connected with the fixed cylinder 801.

[0040] The bottom end of the movable rod 804 passes through three sets of filter plates 701 and three sets of filter plates 702 in sequence. The movable rod 804 is movably connected to filter plate 701 and rotatably connected to filter plate 702. The electric push rod 802 pushes the limiting block 803 and the movable rod 804 downward. The movable rod 804 pushes the filter plate 702 downward, so the distance between the corresponding filter plate 701 and filter plate 702 increases, providing sufficient friction space for the medium and impurities.

[0041] A guide assembly 9 is provided between filter plate 1 701 and filter plate 2 702 to limit the movement of filter plate 2 702. The guide assembly 9 includes a limiting plate 1 901 fixedly connected to filter plate 2 702. Each set of filter plate 2 702 corresponds to two sets of limiting plates 1 901. The two sets of limiting plates 1 901 are symmetrically distributed about the central axis of filter plate 2 702. The lower outer surface of filter plate 1 701 is fixedly connected to the limiting plate 2 902 at the position corresponding to filter plate 2 702. The upper outer surface of limiting plate 1 901 is provided with a movable hole 903. One end of limiting plate 2 902 passes through the movable hole 903 and is movably connected to it to ensure that filter plate 2 702 will not rotate during the up and down movement, and to prevent filter plate 2 702 from being relatively stationary with the cleaning assembly. The outer surface of one side of limiting plate 2 902 is inclined to one side with the top outer surface of limiting plate 1 901 to avoid impurity residue.

[0042] Example 4: Figures 2-4 As shown, the difference between this embodiment and embodiments 1, 2, and 3 is that a connecting plate 10 is fixedly connected to the outer surface of the movable rod 804 at the position between filter plate 1 701 and filter plate 2 702. Since the movable rod 804 is threadedly connected to the movable cylinder 405, the movable rod 804 drives the connecting plate 10 to rotate during the downward movement of the movable rod 804. Movable grooves 12 are opened on the outer surfaces of the upper and lower ends of the connecting plate 10 near the sides. A spring 13 and a guide post 14 are provided inside the movable groove 12. One end of the spring 13 is fixedly connected to the movable groove 12, and the other end is fixedly connected to the guide post 14.

[0043] The guide post 14 is movably connected to the movable groove 12. Scrapers 11 are provided on both the upper and lower sides of the connecting plate 10. One end of the guide post 14 extends through to the outside of the movable groove 12 and is fixedly connected to the scraper 11. Under the action of the spring 13, the scraper 11 is always in contact with the corresponding filter plate 1 701 and filter plate 2 702. The scraper 11 rotates with the connecting plate 10 and scrapes and cleans the impurities with strong adhesion on the surface of filter plate 1 701 and filter plate 2 702.

[0044] The working process and principle of this invention are as follows:

[0045] Step one, when filtering, sewage is introduced through the inlet pipe 401, the motor 406 drives the rotating column 407 to rotate, and the internal center of the movable cylinder 405 forms a vortex effect during the rotation of the rotating column 407. Therefore, during the flow of sewage through the movable cylinder 405 and towards the guide pipe 402, the solid impurities in the sewage gather towards the center of the internal movable cylinder 405 under the action of the vortex effect, and part of the solid impurities are wrapped around the surface of the bristles 409;

[0046] Step two, the sewage after preliminary impurity removal is uniformly sprayed in the inside of the filter tank 1 through the spray head 403, and the sewage sequentially passes through the three groups of filter elements 7, and the media arranged inside the three groups of filter elements 7 filter the sewage layer by layer. The quartz sand is used to remove suspended matter, silt, rust and other substances contained in the sewage, and the manganese sand is used to remove iron and manganese impurities in the water.

[0047] Step three, the sewage after filtering treatment is discharged and collected through the water outlet pipe 5. After a period of treatment, the inside of the filter tank needs to be backwashed. At this time, the distance between the filter plate one 701 and the filter plate two 702 is adjusted, the electric push rod 802 pushes the limit block 803 and the movable rod 804 to move downward, and the movable rod 804 pushes the filter plate two 702 downward, so that the distance between the corresponding filter plate one 701 and the filter plate two 702 increases, providing sufficient friction space for the medium and impurities.

[0048] Step four, since the movable rod 804 is threadedly connected with the movable cylinder 405, the movable rod 804 drives the connecting plate 10 to rotate during the downward movement of the movable rod 804. The scraper 11 is always attached to the corresponding filter plate one 701 and filter plate two 702 under the action of the spring 13. The scraper 11 rotates with the connecting plate 10 and scrapes off the impurities with strong adhesion on the surface of the filter plate one 701 and the filter plate two 702, improving the backwashing effect and avoiding the adverse effects of long-term and continuous filtration of sewage caused by a large amount of impurities remaining on the surface of the filter plate.

[0049] Step five, the control valve corresponding to the water outlet pipe 5 is closed, pure water is introduced into the inside of the filter tank 1 through the backwashing inlet pipe 6, and the pure water is sprayed on the three groups of media through the backwashing inlet pipe 6 to backwash the three groups of media. Under the washing of the pure water, the medium and the impurities rub against each other, which helps the impurities on the surface of the medium to fall off quickly. The waste water hole 15 is controlled to be opened and closed through the corresponding control valve. When the liquid level of the washed pure water corresponds to the waste water hole 15 located below, the waste water hole 15 located below is opened, and part of the impurities are discharged through the waste water hole 15 located below. After 30 seconds, the waste water hole 15 located below is closed, and the waste water hole 15 located in the middle is opened.

[0050] When the liquid level of the washed pure water corresponds to the waste water hole 15 located in the middle, part of the impurities are discharged through the waste water hole 15 located in the middle. According to the above steps, the impurities finally enter the inside of the waste water pipe 16 through the waste water hole 15 located above and are discharged.

[0051] Step six, then close the control valve corresponding to the waste water hole 15, open the drain pipe located in the lower end, so that the pure water after flushing is completely discharged, then reduce the interval of the filter plate one 701 and the filter plate two 702, and then the next round of sewage filtration is carried out.

[0052] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A multi-media wastewater treatment filter with operating condition adjustment function, comprising a filter tank (1), wherein a top maintenance port (2) is fixedly connected to the upper outer surface of the filter tank (1), and a middle maintenance port (3) is provided on the outer surface of the filter tank (1) near the middle and bottom, characterized in that, The filter tank (1) is provided with a liquid inlet assembly (4) near the top of its outer surface, and the liquid inlet assembly (4) extends into the interior of the filter tank (1); The lower outer surface of the filter tank (1) is fixedly connected to the water outlet pipe (5) and the backwash water inlet pipe (6) controlled by the control valve. The filter tank (1) is also equipped with three sets of filter elements (7) for storing the medium at equal intervals. An adjustment mechanism (8) for adjusting the volume of the filter elements (7) is provided between the three sets of filter elements (7) and the filter tank (1). The filter element (7) includes a filter plate one (701) fixedly connected to the filter tank (1) and a filter plate two (702) movably connected to the filter tank (1), and the filter plate one (701) is located above the corresponding filter plate two (702). A guide component (9) for limiting the movement of the filter plate two (702) is provided between the filter plate one (701) and the filter plate two (702). The liquid inlet assembly (4) includes an inlet pipe (401) for introducing wastewater into the filter tank (1), and a guide pipe (402) is fixedly connected to one end of the inlet pipe (401). One end of the guide pipe (402) extends into the interior of the filter tank (1) and is fixedly connected to the filter tank (1). The end of the guide pipe (402) away from the inlet pipe (401) is closed, and several sets of nozzles (403) are fixedly connected at equal intervals on the outer surface of the guide pipe (402). The guide tube (402) and the inlet tube (401) form a 135-degree angle, and the end of the guide tube (402) away from the inlet tube (401) is located on the upper side of the inlet tube (401). A connecting tube (404) is fixedly connected to the bottom end of the outer surface of the inlet tube (401) and the connection point of the guide tube (402), and the connecting tube (404) communicates with the inlet tube (401). A movable cylinder (405) is detachably and sealed to the outer surface of the inlet tube (401), and a motor (406) is provided on the bottom outer surface of the movable cylinder (405). The output end of the motor (406) passes through the interior of the movable cylinder (405) and is fixedly connected to a rotating column (407). Several sets of fixed columns (408) are fixedly connected to the outer surface of the rotating column (407), and bristles (409) are fixedly connected to the outer surface of the fixed column (408).

2. The multi-media wastewater treatment filter with operating condition adjustment function according to claim 1, characterized in that, The adjustment mechanism (8) includes a fixed cylinder (801) fixedly connected to the top of the inner surface of the filter tank (1), and an electric push rod (802) is provided inside the fixed cylinder (801). One end of the electric push rod (802) is fixedly connected to the fixed cylinder (801), and the other end is fixedly connected to a limit block (803). A movable rod (804) is fixedly connected to the lower outer surface of the limit block (803), and the movable rod (804) is threadedly connected to the fixed cylinder (801). The bottom end of the movable rod (804) passes through three sets of filter plates (701) and three sets of filter plates (702) in sequence. The movable rod (804) is movably connected to filter plates (701), and the movable rod (804) is rotatably connected to filter plates (702).

3. The multi-media wastewater treatment filter with operating condition adjustment function according to claim 2, characterized in that, A connecting plate (10) is fixedly connected to the outer surface of the movable rod (804) at the position between filter plate one (701) and filter plate two (702). Movable grooves (12) are opened on the outer surfaces of the upper and lower ends of the connecting plate (10) near the sides. A spring (13) and a guide post (14) are provided inside the movable groove (12). One end of the spring (13) is fixedly connected to the movable groove (12), and the other end is fixedly connected to the guide post (14). The guide post (14) is movably connected to the movable groove (12). Scrapers (11) are provided on the upper and lower sides of the connecting plate (10). One end of the guide post (14) extends through to the outside of the movable groove (12) and is fixedly connected to the scraper (11).

4. The multi-media wastewater treatment filter with operating condition adjustment function according to claim 1, characterized in that, The guide assembly (9) includes a limiting plate (901) fixedly connected to the filter plate (702). Each set of filter plates (702) corresponds to two sets of limiting plates (901). The two sets of limiting plates (901) are symmetrically distributed with the central axis of the filter plate (702) as the axis of symmetry. The lower outer surface of the filter plate (701) is fixedly connected to the limiting plate (902) at the position corresponding to the filter plate (702). The upper outer surface of the limiting plate (901) is provided with a movable hole (903). One end of the limiting plate (902) passes through the movable hole (903) and is movably connected to it. The outer surface of one side of the limiting plate (902) is inclined to one side to the top outer surface of the limiting plate (901).

5. The multi-media wastewater treatment filter with operating condition adjustment function according to claim 1, characterized in that, Wastewater holes (15) are provided on one side of the inner surface of the filter tank (1) above each filter plate (701), and a wastewater pipe (16) is provided on the outer side of the filter tank (1) at the position corresponding to the wastewater hole (15). The wastewater pipe (16) is fixedly connected to and communicates with the wastewater hole (15). A drain pipe for discharging wastewater is provided on the lower outer surface of the filter tank (1).

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